Potential analytical interferences when measuring Tmax during temperature programmed pyrolysis of hydrothermally altered volcanoclastic sediment

• DOI: 10.1017/exp.2023.3
• Publication Date: 2023-02-10T10:18:44Z
• Authors: Stephen A. Bowden; Yuino Kobayashi; Ogheneworo E. Offeh; Man-Yin Tsang; Yuzuru Yamamoto
• Keywords: Carbon fibers

Abstract The temperature of maximum pyrolysis yield (known as Tmax) can be used to determine the level thermal alteration in sedimentary organic matter; higher Tmax values represent alteration. is commonly measured on petroleum source rocks or similar sediments with high carbon contents. It would desirable measure volcanic because they have complex patterns However, often low total contents and consequently are susceptible analytical interferences. Despite this, it shown that meaningful measurements still made sediment 0.2% interference caused by bitumen ionizable salts mitigated solvent extraction rinsing water. Thus, reasonable use programmed assess levels even volcanoclastic sediments.